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How do I check how many options there are in a dropdown menu?
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var length = $('#mySelectList').children('option').length;
or
var length = $('#mySelectList > option').length;
This assumes your <select> list has an ID of mySelectList.
http://api.jquery.com/length/
http://api.jquery.com/chil...
How do I get Windows to go as fast as Linux for compiling C++?
...ringing its hand and forcing it to use less memory for its own algorithms. My knowledge is empirical. I lost performance when I used a RAMdisk for compilations.
– Noufal Ibrahim
Dec 22 '11 at 19:21
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window.onload vs document.onload
... try window.addEventListener('load', function() {...}). I've also updated my answer.
– Aakash
Mar 30 '17 at 0:03
4
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How to automatically convert strongly typed enum into int?
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@NicolBolas my bad, you're right, thank you for pointing on that. But that backward compatibility in c++11 encourages to use it without the scope (I've seen tons of that code with and without the scope across the sources). I'm trying to ...
How do you use gcc to generate assembly code in Intel syntax?
...rked for them.
I just tried this on the mac and it failed, so I looked in my man page:
-masm=dialect
Output asm instructions using selected dialect. Supported choices
are intel or att (the default one). Darwin does not support intel.
It may work on your platform.
For Mac OSX:...
When should I use the HashSet type?
...
Here's a real example of where I use a HashSet<string>:
Part of my syntax highlighter for UnrealScript files is a new feature that highlights Doxygen-style comments. I need to be able to tell if a @ or \ command is valid to determine whether to show it in gray (valid) or red (invalid). I ...
Is it wrong to use Deprecated methods or classes in Java?
I am using eclipse to develop a web application. Just today I have updated my struts version by changing the JAR file. I am getting warnings at some places that methods are deprecated, but the code is working fine.
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Is using 'var' to declare variables optional? [duplicate]
...al scope, the variable is truly global and cannot be deleted.
This is, in my opinion, one of the most dangerous issues with javascript, and should be deprecated, or at least raise warnings over warnings. The reason is, it's easy to forget var and have by accident a common variable name bound to the...
Prevent HTML5 video from being downloaded (right-click saved)?
...t directly visiting the video url.
At the end of the day, I'd just upload my video to a third-party video site, like YouTube or Vimeo. They have good video management tools, optimizes playback to the device, and they make efforts in preventing their videos from being ripped with zero effort on your...
Javascript checkbox onChange
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Pure javascript:
const checkbox = document.getElementById('myCheckbox')
checkbox.addEventListener('change', (event) => {
if (event.target.checked) {
alert('checked');
} else {
alert('not checked');
}
})
My Checkbox: <input id="myCheckbox" type="checkbox"...